Sidelink operation method and terminal

ABSTRACT

The embodiments of the present disclosure provide a sidelink operation method and a terminal. The method includes: acquiring sidelink configuration information, wherein the sidelink configuration information includes at least one of feedback configuration information and measurement configuration information; performing at least one of a measurement operation and a feedback operation on sidelink according to the sidelink configuration information.

CROSS-REFERENCE TO RELATED APPLICATION

The present application is a continuation application of InternationalApplication No. PCT/CN2019/081896 filed on Apr. 9, 2019, which claimspriority of Chinese Patent Application No. 201810332849.7 filed on Apr.13, 2018, both of which are incorporated herein by reference in theirentireties.

TECHNICAL FIELD

The present disclosure relates to the field of communicationstechnology, and in particular to a sidelink operation method and aterminal.

BACKGROUND

Sidelink, which is used for direct transmission between terminalswithout a network equipment, is supported by Long Term Evolution (LTE)system in related art. However, the sidelink transmission in the LTEsystem of the related art is performed on basis of broadcasting, and thereceiving terminal does not feedback any information to the transmittingterminal. For example: only one piece of data is transmitted, and thereceiving terminal may not receive the piece of data for variousreasons, resulting in lower transmission reliability of the system. Ifthe transmitting terminal ensures the reliability of data transmissionby broadcasting multiple pieces of the same data, the system resourceutilization and frequency efficiency may be reduced. It can be seen thatthe transmission performance of sidelink in the related art isrelatively poor.

SUMMARY

The embodiments of the present disclosure provide a sidelink operationmethod and a terminal.

In a first aspect, an embodiment of the present disclosure provides asidelink operation method applied to a terminal, including:

acquiring sidelink configuration information, wherein the sidelinkconfiguration information includes at least one of feedbackconfiguration information and measurement configuration information;

performing at least one of a measurement operation and a feedbackoperation on sidelink according to the sidelink configurationinformation.

In a second aspect, an embodiment of the present disclosure furtherprovides a terminal including:

an acquisition module configured to acquire sidelink configurationinformation, wherein the sidelink configuration information includes atleast one of feedback configuration information and measurementconfiguration information;

a performing module configured to perform at least one of a measurementoperation and a feedback operation on sidelink according to the sidelinkconfiguration information.

In a third aspect, an embodiment of the present disclosure furtherprovides a terminal including: a storage, a processor, and a computerprogram stored on the storage and capable of running on the processor,the computer program implementing, when executed by the processor, thesteps of the sidelink operation method provided by an embodiment of thepresent disclosure.

In a fourth aspect, an embodiment of the present disclosure furtherprovides a computer readable storage medium having a computer programstored thereon, the computer program implementing, when executed by aprocessor, the steps of the sidelink operation method provided by anembodiment of the present disclosure.

In the embodiments of the present disclosure, sidelink configurationinformation is acquired, wherein the sidelink configuration informationincludes at least one of feedback configuration information andmeasurement configuration information; at least one of a measurementoperation and a feedback operation is performed on sidelink according tothe sidelink configuration information. Thus, the transmissionperformance of sidelink can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of a network system to which anembodiment of the present disclosure is applicable;

FIG. 2 is a flowchart of a sidelink operation method according to anembodiment of the present disclosure;

FIG. 3 is a structural diagram of a terminal according to an embodimentof the present disclosure;

FIG. 4 is a structural diagram of another terminal according to anembodiment of the present disclosure;

FIG. 5 is a structural diagram of another terminal according to anembodiment of the present disclosure;

FIG. 6 is a structural diagram of another terminal according to anembodiment of the present disclosure;

FIG. 7 is a structural diagram of another terminal according to anembodiment of the present disclosure.

DETAILED DESCRIPTION

Referring to FIG. 1, it is a structural diagram of a network system towhich an embodiment of the present disclosure is applicable. As shown inFIG. 1, it includes multiple terminals. The terminal may also be calleda terminal equipment or a user terminal (UE). The terminal may be aterminal-side equipment, such as a mobile phone, a tablet personalcomputer, a laptop computer, a personal digital assistant (PDA), amobile internet device (MID), a wearable device, or an in-vehicledevice. It should be noted that the specific types of terminals are notlimited in the embodiments of the present disclosure. In the embodimentsof the present disclosure, multiple terminals may communicate throughthe sidelink, for example, data transmission or signaling transmission,etc. In addition, the communication between multiple terminals throughthe sidelink may be one-to-one communication, one-to-many communication,or many-to-one communication, which is not limited in the embodiments ofthe present disclosure. Of course, the above network system may alsoinclude a network-side equipment, and the network-side equipment maycommunicate with the terminals, for example: signaling transmission ordata transmission, or the like. Of course, in some scenarios, someterminals may not be able to communicate with the network-sideequipment, for example, some terminals are outside the network coverage.The network-side equipment may be a base station, such as a 4G basestation, or a 5G base station, or a base station of a later version, ora base station in other communication systems, or called Node B, EvolvedNode B, or other words in the field, as long as it can achieve the sametechnical effect, the base station is not limited to a specifictechnical term. It should be noted that in the embodiments of thepresent disclosure, only a 5G base station is taken as an example, butthe specific type of network-side equipment is not limited.

Referring to FIG. 2, it is a flowchart of a sidelink operation methodaccording to an embodiment of the present disclosure. The method isapplied to a terminal, and as shown in FIG. 2, includes the followingsteps:

Step 201, acquiring sidelink configuration information, wherein thesidelink configuration information includes at least one of feedbackconfiguration information and measurement configuration information.

The aforementioned acquiring sidelink configuration information may be:acquiring the sidelink configuration information throughpre-configuration, signaling transmitted from network side, or signalingtransmitted by a peer terminal. For example, the sidelink configurationinformation may be predefined by a protocol, or pre-configured by aterminal, and the above signaling transmitted from network side may bebroadcasting signaling, higher layer signaling, Media Access ControlControl Element (MAC CE), or Downlink Control Information (DCI). That isto say, the network side may configure the above sidelink configurationinformation through broadcast, dedicated Radio Resource Control (RRC)higher layer signaling, MAC CE or DCI. The above signaling transmittedby the peer terminal may include: sidelink broadcasting channelsignaling, sidelink physical layer control signaling, or sidelink higherlayer signaling. Among them, the above broadcasting channel may bePhysical Sidelink Broadcast Channel (PSBCH), Sidelink Master InformationBlock (SL-MIB), or Sidelink Broadcast Control Channel (SBCCH). The abovesidelink physical control channel may be Sidelink Control Information(SCI), and the above sidelink higher layer signaling may be the MAC CEof sidelink, or the RRC signaling.

The above feedback configuration information may be information used toconfigure the feedback operation of the terminal on the sidelink, sothat the terminal may feedback according to the feedback configurationinformation, so as to improve the feedback performance on the sidelink.The above measurement configuration information may be information usedto perform configuration by the measurement operation of the terminal onthe sidelink, so that the terminal can perform measurement according tothe measurement configuration information, so as to improve themeasurement performance on the sidelink.

Step 202, performing at least one of a measurement operation and afeedback operation on the sidelink according to the sidelinkconfiguration information.

The above measurement operation may be transmitting a measurementreference signal, or measuring the measurement reference signal, and theabove feedback operation may be performing feedback on the peerterminal, for example, feeding back a transmission result, or feedingback channel state information (CSI), etc.

In the embodiments of the present disclosure, the measurement referencesignal may be a reference signal used for channel estimation ordetection, or a synchronization reference signal. In addition, in theembodiments of the present disclosure, the measurement reference signalmay also be referred to as a measurement signal.

The above performing at least one of the measurement operation and thefeedback operation on sidelink according to the sidelink configurationinformation may be: performing the feedback operation according to thefeedback configuration information, and/or, performing the measurementoperation according to the measurement configuration information.

With the above step, the terminal can perform at least one of themeasurement operation and the feedback operation on the sidelink, sothat the transmission performance of sidelink can be improved in theembodiment of the present disclosure compared with the related art inwhich the receiving terminal does not feedback any information to thetransmitting terminal.

In addition, since the measurement operation and the feedback operationcan be performed on the sidelink, the physical layer point-to-pointconnection between the first terminal and the peer terminal can berealized, and the physical layer unicast transmission and the feedbackof information such as retransmission response or CSI by the terminalcan be supported on the sidelink; furthermore, beam pairing can beperformed between terminals to improve the system resource utilizationand spectrum efficiency, and achieve the effect of improving thetransmission performance of sidelink. For example, the beam pairingbetween terminals may be performed according to the foregoing physicallayer feedback information, and use the paired beams for datatransmission, or one terminal may perform data retransmission accordingto feedback information fed back by another terminal.

It should be noted that the foregoing method provided in the embodimentsof the present disclosure may be applied to systems such as LTE Sidelinkor 5G NR Sidelink or 802.11p or Dedicated Short Range Communications(DSRC). Among them, 802.11p can also be called Wireless Access in theVehicular Environment (WAVE) system. However, there is no limitation onthis, as long as it can achieve basically the same functions, it issuitable for other communication systems, for example, 6G systems orother communication systems that use Sidelink can be applied.

As an optional implementation, the feedback configuration informationincludes at least one of:

feedback content, feedback type, feedback period, and a mapping mode offeedback bit.

The feedback content may include at least one of: a reception responseof Physical Sidelink Shared Channel (PSSCH), and CSI feedback;

the feedback type may include: periodic feedback, aperiodic feedback, orsemi-persistent feedback;

the mapping mode of feedback bit may include at least one of:

a maximum number of Resource Elements (REs) allocated for feedback bit,beta-offset of feedback bit mapping, a maximum number of bits fed backsimultaneously, a discarding partial feedback bit configuration, and abundling feedback bit configuration.

The above beta-offset may be used to indicate the beta-offsetconfiguration actually used by feedback bit and PSSCH resource mappingwhen the PSSCH is multiplexed to transmit the feedback bits, and thebeta-offset configuration may indicate the number of REs allocated tothe feedback bits. With the beta-offset indication, the interactionperformance between terminals can be improved, thereby improving thetransmission performance of sidelink.

The above discarding partial feedback bit configuration is used toindicate whether to discard a part of the feedback bits and how todiscard the part of the feedback bits. For example, in a case that thenumber of bits that need to be fed back at the terminal exceeds themaximum number of bits, or the maximum number of REs allocated forfeedback bits cannot transmit all the feedback bits, discarding can beperformed according to the discarding partial feedback bitconfiguration. Since the discarding is performed according to thediscarding partial feedback bit configuration, the feedback performancecan be guaranteed. For example: discarding can be performed according tothe priority level, or according to the type.

The above bundling feedback bit configuration is used to indicatewhether to bundle feedback bits and how to bundle feedback bits. Forexample, in a case that the number of bits that need to be fed back atthe terminal exceeds the maximum number of bits, or the maximum numberof REs allocated for feedback bits cannot transmit all the feedbackbits, multiple pieces of feedback information are bundled to a commonfeedback bit, so that fewer resources can be used to feedback morefeedback information, so as to improve the feedback performance ofsidelink. For example: the maximum number of bits is 2, and the terminalneeds to feedback 4 pieces of feedback information in some scenarios,and the 4 pieces of feedback information can be bundled to 2 bits forfeedback. For example, 1 means that both the two pieces of feedbackinformation are received successfully, while 0 means that the two piecesof feedback information both are received unsuccessfully or partiallyreceived unsuccessfully.

In this implementation, it is possible to clarify the feedback behaviorof the terminal through the above feedback configuration information,thereby avoiding erroneous feedback, and improving the feedbackperformance of sidelink.

As an optional implementation, the measurement configuration informationincludes at least one of:

a measurement reference signal configuration, a measurement referencesignal transmission configuration, and a measurement reference signalmeasurement configuration;

wherein the measurement reference signal configuration is used toindicate at least one of a type, location, bandwidth, period, andsequence of a measurement reference signal;

the measurement reference signal transmission configuration is used toindicate validity or invalidity of transmission of the measurementreference signal;

the measurement reference signal measurement configuration is used toindicate start or stop of measurement of the measurement referencesignal, and feedback information for indicating start or stop oftransmission of the measurement reference signal.

The above sequence of the measurement reference signal may be thesequence generation of the measurement reference signal, or may beunderstood as generating the above sequence of the measurement referencesignal.

The above validity of transmission of the measurement reference signalmay be: allowing to transmit the measurement reference signal orinstructing to transmit the measurement reference signal. The aboveinvalidity of transmission of the measurement reference signal may beunderstood as: prohibiting the transmission of the measurement referencesignal.

In this implementation, with the above measurement configurationinformation, the related information of the measurement reference signalcan be determined, and the transmission behavior, measurement behavior,and feedback behavior of the measurement reference signal can bedetermined, so that erroneous measurement operations are avoided.

As an optional implementation, before the performing at least one of themeasurement and the feedback on sidelink according to the sidelinkconfiguration information, the method further includes:

enabling or disabling at least one of a measurement mechanism and afeedback mechanism;

the performing at least one of the measurement operation and thefeedback operation on sidelink according to the sidelink configurationinformation includes:

in a case of enabling the measurement mechanism, performing themeasurement operation according to the measurement configurationinformation;

in a case of enabling the feedback mechanism, performing the feedbackoperation according to the feedback configuration information.

The above measurement mechanism may be: allowing the terminal to performthe measurement operation, and the above feedback mechanism may be:allowing the terminal to perform the feedback operation.

In this implementation, it is possible to flexibly configure themeasurement mechanism and the feedback mechanism, so that the effectsthat the power consumption of the terminal and the transmissionresources can be saved is achieved. For example, the measurementmechanism and the feedback mechanism can be disabled in some scenariosto save the power consumption of the terminal and the transmissionresources, because some scenarios may not require feedback andmeasurement.

It should be noted that the measurement mechanism and the feedbackmechanism can also be called the measurement and feedback mechanism,that is, the two mechanisms can be enabled or disabled together. Ofcourse, this is not limited, for example: in some scenarios, thefeedback mechanism may be enabled while the measurement mechanism may bedisabled.

Optionally, the enabling or disabling at least one of the measurementmechanism and the feedback mechanism includes:

enabling or disabling at least one of the measurement mechanism and thefeedback mechanism according to a pre-configuration, signalingtransmitted from network side, or signaling transmitted by a peerterminal.

The foregoing enabling or disabling at least one of the measurementmechanism and the feedback mechanism according to the signalingtransmitted from network side may be as follows: the network sideequipment enables or disables at least one of the measurement mechanismand the feedback mechanism through broadcasting or dedicated RRC higherlayer signaling, MAC CE or DCI; the foregoing enabling or disabling atleast one of the measurement mechanism and the feedback mechanismaccording to the signaling transmitted by the peer terminal may be asfollows: the transmitting terminal requests the receiving terminalthrough signaling, to enable or disable at least one of the measurementmechanism and the feedback mechanism.

The signaling transmitted from network side may include:

broadcasting signaling, higher layer signaling, MAC CE, or DCI;

the signaling transmitted by the peer terminal may include:

sidelink broadcasting channel signaling, sidelink broadcasting controlchannel signaling, sidelink physical layer control signaling, orsidelink higher layer signaling.

In this implementation, it is possible to flexibly enable or disable atleast one of the measurement mechanism and the feedback mechanism toimprove the transmission performance of sidelink.

In addition, it should be noted that, to enable or disable themeasurement mechanism and the feedback mechanism, the above sidelinkconfiguration information may be configured through the same signaling,which can save transmission overhead. Of course, the configuration ofthe sidelink configuration information, and the enabling and disablingof the measurement mechanism and feedback mechanism can also be realizedthrough different methods or different signaling, which is not limited.

In addition, if the terminal receives the signaling transmitted fromnetwork side, and the terminal can also have the pre-configurationcontent, the terminal can validate the configuration in the signalingtransmitted from network side; that is, the configuration in thesignaling transmitted from network side overwrites the content in thepre-configuration.

As an optional implementation, before the enabling or disabling at leastone of the measurement mechanism and the feedback mechanism according tothe pre-configuration, the signaling transmitted from network side, orthe signaling transmitted by the peer terminal, the method furtherincludes at least one of:

reporting capability information of the terminal to the network sidethrough RRC signaling;

broadcasting the capability information of the terminal through thesidelink;

wherein the capability information is used to indicate at least one of:

whether to support measurement, whether to support feedback, type ofsupported measurement, content of supported measurement, type ofsupported feedback, and content of supported feedback.

The foregoing whether to support measurement may be: whether to supporttransmission of a measurement reference signal, or whether to supportmeasurement of the measurement reference signal, the type of supportedmeasurement may be the type of the supported measurement referencesignal, and the content of supported measurement may be the content ofthe supported measurement reference signal.

The foregoing broadcasting the capability information of the terminalthrough the sidelink may be: informing surrounding terminals (forexample:

surrounding receiving terminals) of the capability information of theterminal through sidelink broadcast.

In this implementation, since the capability information of the terminalis transmitted to the network side or the surrounding terminals, thenetwork side can perform corresponding configuration according to thecapability information to improve the performance of the communicationsystem and avoid incorrect configuration, and the surrounding terminalscan perform corresponding transmissions on the sidelink according to thecapability information of the terminal to improve the transmissionperformance of sidelink.

As an optional implementation, the performing the feedback operation onthe sidelink includes:

transmitting feedback bits and feedback indication information on thesidelink through at least one of SCI, PSSCH scheduled by the SCI, andMAC CE.

It should be noted that the above feedback bits and feedback indicationinformation can be transmitted in any of the SCI, the PSSCH scheduled bythe SCI and the MAC CE; or, the feedback bits may be transmitted in someof the SCI, the PSSCH scheduled by the SCI and the MAC CE, while thefeedback indication information is transmitted in others, which is notlimited. Optionally, the above feedback indication information istransmitted in the above SCI. Of course, in addition to the abovefeedback indication information being transmitted, the SCI may alsotransmit or not transmit feedback bits.

In this implementation, it can be realized that the terminal carries ortransmits feedback bits in the SCI, and the terminal also carries thefeedback bits in the PSSCH scheduled by the SCI (that is, the PSSCH ismultiplexed to transmit the feedback bits), and indicates in thescheduled SCI whether or not there are feedback bits in the PSSCH orSCI; and it can also be realized that the UE carries the feedback bitsin the MAC layer signaling (for example: MAC CE). In this way,diversified feedback can be used to meet different communication needsand improve the feedback performance of sidelink.

Optionally, the feedback indication information includes at least oneof:

feedback type or feedback content, reception object of feedback, andPSSCH transmission process number in response to the feedback;

wherein the feedback type or feedback content includes at least one of:a response of receiving PSSCH, and CSI feedback;

the reception object of feedback includes: an ID of a receivingterminal, a group ID of the receiving terminal, a fixed ID allocated tothe receiving terminal by network, a temporary ID allocated to thereceiving terminal by network, or a truncated ID of the receivingterminal, the receiving terminal is a terminal performing feedback.

The response of receiving PSSCH may be HARQ-ACK or other responses. Theabove CSI feedback may include at least one of: a Channel QualityIndicator (CQI), a Precoding Matrix Indicator (PMI), a CSI-RS resourceindicator (CRI), a Rank Indication (RI), a Layer Indication (LI), andLayer 1 Reference Signal Received Power (L1-RSRP), wherein the aboveCSI-RS refers to the Channel State Information Reference Signal.

The above terminal may be a terminal to which the embodiment of thepresent disclosure is applied, because the above terminal may be used asthe transmitting terminal or the receiving terminal in the process ofthe PSSCH transmission or signaling transmission. Of course, the aboveterminal may also be other terminals that perform feedback, which is notlimited. The above temporary ID may be a Radio Network TemporaryIdentity (RNTI).

The feedback performance of sidelink can be improved through the abovereception objects of feedback.

As an optional implementation, the performing the measurement operationon the sidelink includes at least one of:

transmitting a measurement reference signal to a peer terminal on thesidelink;

measuring a measurement reference signal that is transmitted on thesidelink by the peer terminal.

In this implementation, it can be achieved that the terminal transmits ameasurement reference signal to the peer terminal, so that the peerterminal can perform measurement, and the measurement result can be fedback. Moreover, it can also achieved to measure the measurementreference signal that is transmitted on the sidelink by the peerterminal, and then feedback the measurement result to the peer terminalthrough the feedback operation, which can improve the measurementperformance of sidelink, and the measurement result fed back can be usedfor transmission adaptation, e.g., beam pairing, thereby improving thesystem resource utilization and spectrum efficiency.

As an optional implementation, after the acquiring the sidelinkconfiguration information, the method further includes:

according to a usage case of feedback mechanism of the peer terminal,transmitting PSSCH data in a corresponding transmission mode;

wherein, if the usage case is to enable the feedback mechanism, and inthe transmission mode, if reception failure fed back by the peerterminal is received, the PSSCH data that fails to be received isretransmitted;

if the usage case is to disable the feedback mechanism, then in thetransmission mode, blind retransmission is performed on the PSSCH data,wherein the blind retransmission refers to transmission of multiplepieces of same transmission blocks which are transmission blocks of asame piece of PSSCH data, or the blind retransmission refers totransmission multiple pieces of transmission blocks of differentredundancy versions which are transmission blocks of a same piece ofPSSCH data.

The above usage case of feedback mechanism of the peer terminal may betransmitted by the peer terminal, or configured by the network side, orpre-configured, or the like, which is not limited.

In this implementation, after determining the usage case of feedbackmechanism of the peer terminal, transmission may be performed in acorresponding transmission mode to improve the success rate of datatransmission. For example, if the peer terminal enables the feedbackmechanism, and in the transmission mode, if reception failure fed backby the peer terminal is received, the PSSCH data that fails to bereceived is retransmitted; if reception success fed back by the peerterminal is received, each piece of PSSCH data only needs to betransmitted once, which can save transmission resources. If the usagecase is to disable the feedback mechanism, then blind transmission canbe performed, that is, multiple pieces of transmission blocks for onepiece of PSSCH data are transmitted, wherein the multiple pieces oftransmission blocks may be the same transmission blocks, or may bemultiple pieces of transmission blocks of different redundancy versions.

The following uses multiple examples to illustrate the above sidelinkoperation method:

Example I

1. The operator has turned off the physical layer measurement and thefeedback mechanism in the sidelink pre-configuration parameters.

2. UE-1 works outside the network coverage according to thepre-configuration information, and performs transmission based on thephysical layer broadcasting mechanism on the sidelink. Thesynchronization signal can be broadcasted to the receiving-end UE tosynchronize and receive data simultaneously according to the mechanismin the related art.

3. The UE-1 moves into the network coverage and receives theconfiguration information broadcasted by the network side device. Thebroadcasting configuration enables the physical layer measurement andthe feedback mechanism, and provides the measurement configurationinformation and the feedback configuration information, and the UE-1validates the broadcasting configuration information.

4. The UE-1 informs surrounding UEs of its capability to supportmeasurement and feedback on the sidelink, informs it to enable themeasurement and feedback mechanism, and transmits a measurementreference signal to request the receiving-end UE to transmit feedback.The request may include the measurement reference signal configurationand the feedback configuration information, etc.

5. The UE-1 synchronizes with a certain transmitting terminal UE-2through a sidelink synchronization signal to obtain its measurement andfeedback capabilities and configuration information. If the transmittingterminal UE-2 enables the measurement reference signal, then the signalis measured.

6. If the UE-1 receives the unicast PSSCH transmitted by the UE-2, itfeeds back the PSSCH reception demodulation result through sidelink (forexample, HARQ-ACK).

7. The UE-1 feeds back the sidelink measurement result to the UE-2according to the measurement and feedback configuration informationtransmitted by the UE-2.

8. Similarly, the UE-2 also feeds back HARQ-ACK and the sidelinkmeasurement result to the UE-1 through the sidelink.

Example II

1. The UE-1 and the UE-2 move into the network coverage, access thenetwork, and report sidelink capabilities. The UE-1 supportstransmitting the measurement reference signal and feeding back thecapability, while the UE-2 only supports feeding back the capability.The network side enables and configures the feedback configuration ofthe UE-1 and UE-2 through RRC signaling, and enables and configures thesidelink measurement reference signal configuration of the UE-1.

2. The UE-1 transmits the measurement reference signal on the sidelinkaccording to the network side configuration.

3. Once the UE-2 receives the unicast PSSCH transmitted by the UE-1, itfeeds back HARQ-ACK through the sidelink.

4. Similarly, the UE-1 also feeds back HARQ-ACK to the UE-2 through thesidelink.

Example III

1. The UE-1 and the UE-2 move into the network coverage, access thenetwork, and report sidelink capabilities. The UE-1 supportstransmitting the measurement reference signal and feeding back thecapability, while the UE-2 does not support feeding back the capability.The network side enables and configures the feedback configuration ofthe UE-1 through RRC signaling, and enables and configures the sidelinkmeasurement reference signal configuration of the UE-1.

2. The UE-1 transmits the measurement reference signal on the sidelinkaccording to the network side configuration.

3. The UE-2 informs, through sidelink broadcast, the surroundingreceiving UEs that it does not enable or support sidelink feedback.

4. The UE-1 knows that the UE-2 does not enable sidelink feedback byreceiving the broadcasting information of the UE-2. If the UE-1 needs totransmit the PSSCH to the UE-2, the UE-1 can transmit the PSSCH bybroadcasting multiple pieces of the same number (that is, the blindretransmission).

5. If the UE-2 receives the PSSCH transmitted by the UE-1, it tries todemodulate or combine multiple pieces of received PSSCHs, but does notfeedback the HARQ-ACK through the sidelink.

In the embodiment of the present disclosure, the sidelink configurationinformation is acquired, wherein the sidelink configuration informationincludes at least one of the feedback configuration information and themeasurement configuration information; according to the sidelinkconfiguration information, at least one of the measurement operation andthe feedback operation is performed on the sidelink. Thus, thetransmission performance of the sidelink can be improved.

Referring to FIG. 3, it is a structural diagram of a terminal accordingto an embodiment of the present disclosure. As shown in FIG. 3, theterminal 300 includes:

an acquisition module 301 configured to acquire sidelink configurationinformation, wherein the sidelink configuration information includes atleast one of feedback configuration information and measurementconfiguration information;

a performing module 302 configured to perform at least one of ameasurement operation and a feedback operation on sidelink according tothe sidelink configuration information.

Optionally, the feedback configuration information includes at least oneof:

feedback content, feedback type, feedback period, and a mapping mode offeedback bit.

Optionally, the feedback content includes at least one of: a receptionresponse of the PSSCH, and CSI feedback;

the feedback type includes: periodic feedback, aperiodic feedback, orsemi-persistent feedback;

the mapping mode of feedback bit includes at least one of:

a maximum number of resource elements (REs) allocated for feedback bit,beta-offset of feedback bit mapping, a maximum number of bits fed backsimultaneously, a discarding partial feedback bit configuration, and abundling feedback bit configuration.

Optionally, the measurement configuration information includes at leastone of:

a measurement reference signal configuration, a measurement referencesignal transmission configuration, and a measurement reference signalmeasurement configuration;

wherein the measurement reference signal configuration is used toindicate at least one of a type, location, bandwidth, period, andsequence of a measurement reference signal;

the measurement reference signal transmission configuration is used toindicate validity or invalidity of transmission of the measurementreference signal;

the measurement reference signal measurement configuration is used toindicate start or stop of measurement of the measurement referencesignal, and feedback information for indicating start or stop oftransmission of the measurement reference signal.

Optionally, as shown in FIG. 4, the terminal 300 further includes:

an enabling module 303 configured to enable or disable at least one of ameasurement mechanism and a feedback mechanism;

the performing module 302 includes:

a measurement unit 3021 configured to, in a case of enabling themeasurement mechanism, perform the measurement operation according tothe measurement configuration information;

a feedback unit 3022 configured to, in a case of enabling the feedbackmechanism, perform the feedback operation according to the feedbackconfiguration information.

Optionally, the enabling module 303 is configured to enable or disableat least one of the measurement mechanism and the feedback mechanismaccording to a pre-configuration, signaling transmitted from networkside, or signaling transmitted by the peer terminal.

Optionally, the acquisition module 301 is configured to acquire thesidelink configuration information through a pre-configuration,signaling transmitted from network side, or signaling transmitted by thepeer terminal.

Optionally, the signaling transmitted from network side includes:

broadcasting signaling, higher layer signaling, MAC CE, or downlinkcontrol information (DCI);

the signaling transmitted by the peer terminal includes:

sidelink broadcasting channel signaling, sidelink broadcasting controlchannel signaling, sidelink physical layer control signaling, orsidelink higher layer signaling.

Optionally, as shown in FIG. 5, the terminal 300 further includes atleast one of:

a first reporting module 304 configured to report capability informationof the terminal to the network side through the RRC signaling;

a second reporting module 305 configured to broadcast the capabilityinformation of the terminal through the sidelink;

wherein the capability information is used to indicate at least one of:

whether to support measurement, whether to support feedback, type ofsupported measurement, content of supported measurement, type ofsupported feedback, and content of supported feedback.

Optionally, the performing the feedback operation on the sidelinkincludes:

transmitting feedback bit and feedback indication information on thesidelink through at least one of SCI, PSSCH scheduled by the SCI, andMAC CE.

Optionally, the feedback indication information includes at least oneof:

feedback type or feedback content, reception object of feedback, PSSCHtransmission process number in response to the feedback;

wherein the feedback type or feedback content includes at least one of:a response of receiving PSSCH, and CSI feedback;

the reception object of feedback includes: an ID of a receivingterminal, a group ID of the receiving terminal, a fixed ID allocated tothe receiving terminal by network, a temporary ID allocated to thereceiving terminal by network, or a truncated ID of the receivingterminal, the receiving terminal is a terminal performing feedback.

Optionally, the performing the measurement operation on the sidelinkcomprises at least one of:

transmitting a measurement reference signal to a peer terminal on thesidelink;

measuring a measurement reference signal that is transmitted on thesidelink by the peer terminal.

Optionally, as shown in FIG. 6, the terminal further includes:

a transmitting module 306 configured to, according to a usage case offeedback mechanism of a peer terminal, transmit PSSCH data in acorresponding transmission mode;

wherein, if the usage case is to enable the feedback mechanism, and inthe transmission mode, if reception failure fed back by the peerterminal is received, the PSSCH data that fails to be received isretransmitted;

if the usage case is to disable the feedback mechanism, then in thetransmission mode, blind retransmission is performed on the PSSCH data,wherein the blind retransmission refers to transmission of multiplepieces of same transmission blocks which are transmission blocks of asame piece of PSSCH data, or the blind retransmission refers totransmission of multiple pieces of transmission blocks of differentredundancy versions which are transmission blocks of a same piece ofPSSCH data.

The terminal provided in the embodiment of the present disclosure canimplement the processes implemented by the terminal in the methodembodiment of FIG. 2. To avoid repetition, details are not describedagain here, and the transmission performance of sidelink can beimproved.

FIG. 7 is a schematic diagram of the hardware structure of a terminalfor implementing various embodiments of the present disclosure.

The terminal 700 includes, but is not limited to: a radio frequency unit701, a network module 702, an audio output unit 703, an input unit 704,a sensor 705, a display unit 706, a user input unit 707, an interfaceunit 708, a storage 709, a processor 710, a power supply 711 and othercomponents. Those skilled in the art may understand that the terminalstructure shown in FIG. 7 does not constitute a limitation on theterminal, and the terminal may include more or fewer components thanthose illustrated, or combine some components, or have differentcomponent arrangement. In the embodiments of the present disclosure, theterminal includes but is not limited to a mobile phone, a tablet, anotebook, a palmtop computer, a in-vehicle terminal, a wearable device,a pedometer, and the like.

Among them, in an embodiment, in a case that the above terminal is afirst terminal defined in the embodiment of the present disclosure,

the processor 710 is configured to acquire sidelink configurationinformation, wherein the sidelink configuration information includes atleast one of feedback configuration information and measurementconfiguration information;

the radio frequency unit 701 is configured to perform at least one of ameasurement operation and a feedback operation on sidelink according tothe sidelink configuration information.

Optionally, the feedback configuration information includes at least oneof:

feedback content, feedback type, feedback period, and a mapping mode offeedback bit.

Optionally, the feedback content includes at least one of: a receptionresponse of Physical Sidelink Shared Channel (PSSCH), and channel stateinformation (CSI) feedback;

the feedback type includes: periodic feedback, aperiodic feedback, orsemi-persistent feedback;

the mapping mode of feedback bit includes at least one of:

a maximum number of resource elements (REs) allocated for feedback bit,beta-offset of feedback bit mapping, a maximum number of bits fed backsimultaneously, a discarding partial feedback bit configuration, and abundling feedback bit configuration.

Optionally, the measurement configuration information includes at leastone of:

a measurement reference signal configuration, a measurement referencesignal transmission configuration, and a measurement reference signalmeasurement configuration;

wherein the measurement reference signal configuration is used toindicate at least one of a type, location, bandwidth, period, andsequence of a measurement reference signal;

the measurement reference signal transmission configuration is used toindicate validity or invalidity of transmission of the measurementreference signal;

the measurement reference signal measurement configuration is used toindicate start or stop of measurement of the measurement referencesignal, and feedback information for indicating start or stop oftransmission of the measurement reference signal.

Optionally, before the performing at least one of the measurementoperation and the feedback operation on sidelink according to thesidelink configuration information, the processor 710 is furtherconfigured to:

enable or disable at least one of a measurement mechanism and a feedbackmechanism;

the performing, by the radio frequency unit 701, at least one of themeasurement operation and the feedback operation on sidelink accordingto the sidelink configuration information includes:

in a case of enabling the measurement mechanism, performing themeasurement operation according to the measurement configurationinformation;

in a case of enabling the feedback mechanism, performing the feedbackoperation according to the feedback configuration information.

Optionally, the enabling or disabling, by the processor 710, at leastone of the measurement mechanism and the feedback mechanism includes:

enabling or disabling at least one of the measurement mechanism and thefeedback mechanism according to a pre-configuration, signalingtransmitted from network side, or signaling transmitted by the peerterminal.

Optionally, the acquiring, by the processor 710, the sidelinkconfiguration information includes:

acquiring the sidelink configuration information through apre-configuration, signaling transmitted from network side, or signalingtransmitted by the peer terminal.

Optionally, the signaling transmitted from network side includes:

broadcasting signaling, higher layer signaling, Media Access ControlControl Element (MAC CE), or downlink control information (DCI);

the signaling transmitted by the peer terminal includes:

sidelink broadcasting channel signaling, sidelink broadcasting controlchannel signaling, sidelink physical layer control signaling, orsidelink higher layer signaling.

Optionally, before the enabling or disabling at least one of themeasurement mechanism and the feedback mechanism according to thepre-configuration, the signaling transmitted from network side, or thesignaling transmitted by the peer terminal, the radio frequency unit 701is further configured to perform at least one of:

reporting capability information of the terminal to the network sidethrough RRC signaling;

broadcasting the capability information of the terminal through thesidelink;

wherein the capability information is used to indicate at least one of:

whether to support measurement, whether to support feedback, type ofsupported measurement, content of supported measurement, type ofsupported feedback, and content of supported feedback.

Optionally, the performing the feedback operation on the sidelinkincludes:

transmitting feedback bit and feedback indication information on thesidelink through at least one of Sidelink Control Information (SCI),PSSCH scheduled by the SCI, and MAC CE.

Optionally, the feedback indication information includes at least oneof:

feedback type or feedback content, reception object of feedback, andPSSCH transmission process number in response to the feedback;

wherein the feedback type or feedback content includes at least one of:a response of receiving PSSCH, and CSI feedback;

the reception object of feedback includes: an ID of a receivingterminal, a group ID of the receiving terminal, a fixed ID allocated tothe receiving terminal by network, a temporary ID allocated to thereceiving terminal by network, or a truncated ID of the receivingterminal, the receiving terminal is a terminal performing feedback.

Optionally, the performing the measurement operation on the sidelinkincludes at least one of:

transmitting a measurement reference signal to a peer terminal on thesidelink;

measuring a measurement reference signal that is transmitted on thesidelink by the peer terminal.

Optionally, after the acquiring the sidelink configuration information,the radio frequency unit 701 is further configured to:

according to a usage case of feedback mechanism of a peer terminal,transmit PSSCH data in a corresponding transmission mode;

wherein, if the usage case is to enable the feedback mechanism, and inthe transmission mode, if reception failure fed back by the peerterminal is received, the PSSCH data that fails to be received isretransmitted;

if the usage case is to disable the feedback mechanism, then in thetransmission mode, blind retransmission is performed on the PSSCH data,wherein the blind retransmission refers to transmission of multiplepieces of same transmission blocks which are transmission blocks of asame piece of PSSCH data, or the blind retransmission refers totransmission multiple pieces of transmission blocks of differentredundancy versions which are transmission blocks of a same piece ofPSSCH data.

The above terminals can improve the transmission performance of thesidelink.

It should be noted that, in the embodiment of the present disclosure,the radio frequency unit 701 may be used to receive and send signalsduring transmitting and receiving information or during a call,specifically, after receiving the downlink data from the base station,give it to the processor 710 to process the data; also, the uplink datais sent to the base station. Generally, the radio frequency unit 701includes, but is not limited to, an antenna, at least one amplifier, atransceiver, a coupler, a low noise amplifier, a duplexer, and the like.In addition, the radio frequency unit 701 can also communicate with thenetwork and other devices through a wireless communication system.

The terminal provides users with wireless access to the broadbandInternet through the network module 702, such as helping users to sendand receive e-mail, browse web pages, access streaming media, and thelike.

The audio output unit 703 may convert the audio data received by theradio frequency unit 701 or the network module 702 or stored in thestorage 709 into an audio signal and output as sound. Moreover, theaudio output unit 703 may also provide audio output related to specificfunctions performed by the terminal 700 (e.g., call signal receptionsound, message reception sound, etc.). The audio output unit 703includes a speaker, a buzzer, a receiver, and the like.

The input unit 704 is used to receive audio or video signals. The inputunit 704 may include a Graphics processing Unit (GPU) 7041 and amicrophone 7042. The graphics processing unit 7041 processes image dataof still pictures or video obtained by an image capturing device (suchas a camera) in the video capturing mode or the image capturing mode.The processed image frame may be displayed on the display unit 706. Theimage frame processed by the graphics processing unit 7041 may be storedin the storage 709 (or other storage medium) or sent via the radiofrequency unit 701 or the network module 702. The microphone 7042 canreceive sound, and can process such sound into audio data. The processedaudio data can be converted into a format that can be sent to the mobilecommunication base station via the radio frequency unit 701 in thetelephone call mode, and can be output.

The terminal 700 also includes at least one sensor 705, such as a lightsensor, a motion sensor, and other sensors. Specifically, the lightsensor includes an ambient light sensor and a proximity sensor, whereinthe ambient light sensor can adjust the brightness of the display panel7061 according to the brightness of the ambient light, and the proximitysensor can close the display panel 7061 and/or the backlight when theterminal 700 moves to the ear. As a type of motion sensor, theaccelerometer sensor can detect the magnitudes of accelerations invarious directions (generally three axes), and can detect the magnitudeand direction of gravity when not moving, and can be used to recognizethe posture of the terminal (such as horizontal and vertical screenswitching, related games, magnetometer attitude calibration), to performvibration recognition related functions (such as pedometer, tapping),etc.; the sensor 705 may also include a fingerprint sensor, a pressuresensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, ahygrometer, a thermometer, an infrared sensor, etc., which will not berepeated here.

The display unit 706 is used to display information input by the user orinformation provided to the user. The display unit 706 may include adisplay panel 7061, and the display panel 7061 may be configured in theform of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode(OLED), or the like.

The user input unit 707 may be used to receive input numeric orcharacter information, and generate key signal input related to usersettings and function control of the terminal. Specifically, the userinput unit 707 includes a touch panel 7071 and other input devices 7072.The touch panel 7071, also known as a touch screen, can collect user'stouch operation on or near it (for example, the user's operation on ornear the touch panel 7071 using any suitable object or accessory, suchas a finger or a stylus). The touch panel 7071 may include two parts ofa touch detection device and a touch controller. Among them, the touchdetection device detects the user's touch orientation, and detects thesignal generated by the touch operation, and transmits the signal to thetouch controller; the touch controller receives touch information fromthe touch detection device and converts it into contact coordinates,then sends the same to the processor 710, and receives and executes thecommand sent by the processor 710. In addition, the touch panel 7071 canbe implemented in various types such as resistive, capacitive, infrared,and surface acoustic wave types. In addition to the touch panel 7071,the user input unit 707 may also include other input devices 7072.Specifically, other input devices 7072 may include, but are not limitedto, a physical keyboard, function keys (such as volume control buttons,switch buttons, etc.), a trackball, a mouse, and a joystick, which willnot be repeated here.

Further, the touch panel 7071 may be overlaid on the display panel 7061.When the touch panel 7071 detects a touch operation on or near it, ittransmits the touch operation to the processor 710 to determine the typeof touch event, and then the processor 710 provides a correspondingvisual output on the display panel 7061 according to the type of touchevent. Although in FIG. 7, the touch panel 7071 and the display panel7061 are implemented as two independent components to realize the inputand output functions of the terminal, in some embodiments, the touchpanel 7071 and the display panel 7061 may be integrated to implement theinput and output functions of the terminal, which is not limited here.

The interface unit 708 is an interface for connecting an external deviceto the terminal 700. For example, the external device may include awired or wireless headset port, an external power (or battery charger)port, a wired or wireless data port, a memory card port, a port forconnecting a device having an identification module, an audioinput/output (I/O) port, a video I/O port, a headphone port, etc. Theinterface unit 708 may be used to receive input from external devices(e.g., data information, power, etc.) and transmit the received input toone or more elements within the terminal 700 or may be used to transferdata between the terminal 700 and the external devices.

The storage 709 may be used to store software programs and various data.The storage 709 may mainly include a program storage area and a datastorage area, wherein the program storage area may store an operatingsystem, applications required by at least one function (such as a soundplayback function, an image playback function, etc.); the data storagearea may store data created according to the use of a mobile phone (suchas audio data, phone books, etc.), etc. In addition, the storage 709 mayinclude a high-speed random access memory, and may also include anon-volatile storage, such as at least one magnetic disk storage device,a flash memory device, or other volatile solid-state storage devices.

The processor 710 is the control center of the terminal, connectsvarious parts of the entire terminal by using various interfaces andlines, performs various functions and processing data of the terminal byrunning or executing software programs and/or modules stored in thestorage 709 and calling data stored in the storage 709, so as to monitorthe terminal as a whole. The processor 710 may include one or moreprocessing units; preferably, the processor 710 may integrate anapplication processor and a modem processor, where the applicationprocessor mainly processes an operating system, a user interface, andapplications, etc. The modem processor mainly processes wirelesscommunication. It can be understood that the foregoing modem processormay not be integrated into the processor 710.

The terminal 700 may further include a power supply 711 (such as abattery) that supplies power to various components. Preferably, thepower supply 711 may be logically connected to the processor 710 througha power management system, so as to implement charging, discharging, andpower consumption management through the power management system.

In addition, the terminal 700 includes some unillustrated functionalmodules, which will not be repeated here.

Optionally, an embodiment of the present disclosure further provides aterminal which includes a processor 710, a storage 709, and a computerprogram stored on the storage 709 and capable of running on theprocessor 710. When executed by the processor 710, the computer programimplements the processes of the sidelink operation method embodiment,and can achieve the same technical effects. To avoid repetition, detailswill not be described again here.

An embodiment of the present disclosure further provides a computerreadable storage medium having a computer program stored thereon. Whenexecuted by a processor, the computer program implements the processesof the sidelink operation method embodiment, and can achieve the sametechnical effects. To avoid repetition, details will not be describedagain here. The computer readable storage medium may be a Read-OnlyMemory (ROM), a Random Access Memory (RAM), a magnetic disk, or anoptical disk, etc.

It should be noted that, the terms herein “comprising”, “including” orany other variant thereof are intended to cover non-exclusive inclusion,so that a process, method, article, or terminal equipment that includesa series of elements includes not only those elements, but also thosethat are not explicitly listed, or further includes elements inherent tosuch process, method, article or terminal equipment. Without morerestrictions, the element defined by the sentence “comprising a . . . ”does not exclude that there are other identical elements in the process,method, article, or terminal equipment that includes the element.

With the description of the above embodiments, those skilled in the artcan clearly understand that the methods in the above embodiments can beimplemented by means of software plus a necessary general hardwareplatform, and of course, can also be implemented by hardware, but inmany cases the former is a preferred implementation. Based on such anunderstanding, the essential technical solutions of the presentdisclosure, or part of the technical solutions that contributes to therelated art, can be embodied in the form of a software product; thecomputer software product is stored in a storage medium (such as aROM/RAM, a magnetic disk, or an optical disk), including severalinstructions used to cause a terminal (which may be a mobile phone, acomputer, a server, an air conditioner, or a network device, etc.) toperform the methods described in various embodiments of the presentdisclosure.

The embodiments of the present disclosure have been described above withreference to the drawings, but the present disclosure is not limited tothe above specific embodiments. The above specific embodiments aremerely schematic, not restrictive. Under the inspiration of the presentdisclosure, many forms can be made by those skilled in the art withoutdeparting from the purpose of the present disclosure and the scopeprotected by the claims, all of which fall within the protective scopeof the present disclosure.

What is claimed is:
 1. A sidelink operation method applied to aterminal, comprising: acquiring sidelink configuration information,wherein the sidelink configuration information comprises at least one offeedback configuration information and measurement configurationinformation; performing at least one of a measurement operation and afeedback operation on sidelink according to the sidelink configurationinformation.
 2. The method according to claim 1, wherein the measurementconfiguration information comprises at least one of: a measurementreference signal configuration, a measurement reference signaltransmission configuration, and a measurement reference signalmeasurement configuration; wherein the measurement reference signalconfiguration is used to indicate at least one of a type, location,bandwidth, period, and sequence of a measurement reference signal; themeasurement reference signal transmission configuration is used toindicate validity or invalidity of transmission of the measurementreference signal; the measurement reference signal measurementconfiguration is used to indicate start or stop of measurement of themeasurement reference signal, and feedback information for indicatingstart or stop of transmission of the measurement reference signal. 3.The method according to claim 1, wherein prior to the performing atleast one of the measurement operation and the feedback operation onsidelink according to the sidelink configuration information, the methodfurther comprises: enabling or disabling at least one of a measurementmechanism and a feedback mechanism; the performing at least one of themeasurement operation and the feedback operation on sidelink accordingto the sidelink configuration information, comprises: in a case ofenabling the measurement mechanism, performing the measurement operationaccording to the measurement configuration information; in a case ofenabling the feedback mechanism, performing the feedback operationaccording to the feedback configuration information.
 4. The methodaccording to claim 3, wherein the enabling or disabling at least one ofthe measurement mechanism and the feedback mechanism comprises: enablingor disabling at least one of the measurement mechanism and the feedbackmechanism according to a pre-configuration, signaling transmitted fromnetwork side, or signaling transmitted by a peer terminal.
 5. The methodaccording to claim 1, wherein the acquiring the sidelink configurationinformation comprises: acquiring the sidelink configuration informationthrough a pre-configuration, signaling transmitted from network side, orsignaling transmitted by a peer terminal.
 6. The method according toclaim 4, wherein the signaling transmitted from network side comprises:broadcasting signaling, higher layer signaling, Media Access ControlControl Element (MAC CE), or downlink control information (DCI); thesignaling transmitted by the peer terminal comprises: sidelinkbroadcasting channel signaling, sidelink broadcasting control channelsignaling, sidelink physical layer control signaling, or sidelink higherlayer signaling.
 7. The method according to claim 4, wherein prior tothe enabling or disabling at least one of the measurement mechanism andthe feedback mechanism according to the pre-configuration, the signalingtransmitted from network side, or the signaling transmitted by the peerterminal, the method further comprises at least one of: reportingcapability information of the terminal to the network side through radioresource control (RRC) signaling; broadcasting the capabilityinformation of the terminal through the sidelink; wherein the capabilityinformation is used to indicate at least one of: whether to supportmeasurement, whether to support feedback, type of supported measurement,content of supported measurement, type of supported feedback, andcontent of supported feedback.
 8. The method according to claim 1,wherein the performing the feedback operation on the sidelink comprises:transmitting feedback bit and feedback indication information on thesidelink through at least one of Sidelink Control Information (SCI),PSSCH scheduled by the SCI, and MAC CE.
 9. The method according to claim8, wherein the feedback indication information comprises at least oneof: feedback type or feedback content, reception object of feedback, andPSSCH transmission process number in response to the feedback; whereinthe feedback type or feedback content comprises at least one of: aresponse of receiving PSSCH, and CSI feedback; the reception object offeedback comprises: an ID of a receiving terminal, a group ID of thereceiving terminal, a fixed ID allocated to the receiving terminal bynetwork, a temporary ID allocated to the receiving terminal by network,or a truncated ID of the receiving terminal, the receiving terminal is aterminal performing feedback.
 10. The method according to claim 1,wherein the performing the measurement operation on the sidelinkcomprises at least one of: transmitting a measurement reference signalto a peer terminal on the sidelink; measuring a measurement referencesignal that is transmitted on the sidelink by the peer terminal.
 11. Themethod according to claim 1, wherein after the acquiring the sidelinkconfiguration information, the method further comprises: according to ausage case of feedback mechanism of a peer terminal, transmitting PSSCHdata in a corresponding transmission mode; wherein, if the usage case isto enable the feedback mechanism, and in the transmission mode, ifreception failure fed back by the peer terminal is received, the PSSCHdata that fails to be received is retransmitted; if the usage case is todisable the feedback mechanism, then in the transmission mode, blindretransmission is performed on the PSSCH data, wherein the blindretransmission refers to transmission of multiple pieces of sametransmission blocks which are transmission blocks of a same piece ofPSSCH data, or the blind retransmission refers to transmission multiplepieces of transmission blocks of different redundancy versions which aretransmission blocks of a same piece of PSSCH data.
 12. A terminalcomprising a storage, a processor, and a computer program stored on thestorage and capable of running on the processor, the computer programimplementing, when executed by the processor, the steps of a sidelinkoperation method, the method comprising: acquiring sidelinkconfiguration information, wherein the sidelink configurationinformation comprises at least one of feedback configuration informationand measurement configuration information; performing at least one of ameasurement operation and a feedback operation on sidelink according tothe sidelink configuration information.
 13. The terminal according toclaim 12, wherein the measurement configuration information comprises atleast one of: a measurement reference signal configuration, ameasurement reference signal transmission configuration, and ameasurement reference signal measurement configuration; wherein themeasurement reference signal configuration is used to indicate at leastone of a type, location, bandwidth, period, and sequence of ameasurement reference signal; the measurement reference signaltransmission configuration is used to indicate validity or invalidity oftransmission of the measurement reference signal; the measurementreference signal measurement configuration is used to indicate start orstop of measurement of the measurement reference signal, and feedbackinformation for indicating start or stop of transmission of themeasurement reference signal.
 14. The terminal according to claim 12,wherein prior to the performing at least one of the measurementoperation and the feedback operation on sidelink according to thesidelink configuration information, the method further comprises:enabling or disabling at least one of a measurement mechanism and afeedback mechanism; the performing at least one of the measurementoperation and the feedback operation on sidelink according to thesidelink configuration information, comprises: in a case of enabling themeasurement mechanism, performing the measurement operation according tothe measurement configuration information; in a case of enabling thefeedback mechanism, performing the feedback operation according to thefeedback configuration information.
 15. The terminal according to claim14, wherein the enabling or disabling at least one of the measurementmechanism and the feedback mechanism comprises: enabling or disabling atleast one of the measurement mechanism and the feedback mechanismaccording to a pre-configuration, signaling transmitted from networkside, or signaling transmitted by a peer terminal.
 16. The terminalaccording to claim 15, wherein prior to the enabling or disabling atleast one of the measurement mechanism and the feedback mechanismaccording to the pre-configuration, the signaling transmitted fromnetwork side, or the signaling transmitted by the peer terminal, themethod further comprises at least one of: reporting capabilityinformation of the terminal to the network side through radio resourcecontrol (RRC) signaling; broadcasting the capability information of theterminal through the sidelink; wherein the capability information isused to indicate at least one of: whether to support measurement,whether to support feedback, type of supported measurement, content ofsupported measurement, type of supported feedback, and content ofsupported feedback.
 17. The terminal according to claim 12, wherein theperforming the feedback operation on the sidelink comprises:transmitting feedback bit and feedback indication information on thesidelink through at least one of Sidelink Control Information (SCI),PSSCH scheduled by the SCI, and MAC CE.
 18. The terminal according toclaim 17, wherein the feedback indication information comprises at leastone of: feedback type or feedback content, reception object of feedback,and PSSCH transmission process number in response to the feedback;wherein the feedback type or feedback content comprises at least one of:a response of receiving PSSCH, and CSI feedback; the reception object offeedback comprises: an ID of a receiving terminal, a group ID of thereceiving terminal, a fixed ID allocated to the receiving terminal bynetwork, a temporary ID allocated to the receiving terminal by network,or a truncated ID of the receiving terminal, the receiving terminal is aterminal performing feedback.
 19. The terminal according to claim 12,wherein the performing the measurement operation on the sidelinkcomprises at least one of: transmitting a measurement reference signalto a peer terminal on the sidelink; measuring a measurement referencesignal that is transmitted on the sidelink by the peer terminal.
 20. Acomputer readable storage medium having a computer program storedthereon, the computer program implementing, when executed by aprocessor, the steps of a sidelink operation method, the methodcomprising: acquiring sidelink configuration information, wherein thesidelink configuration information comprises at least one of feedbackconfiguration information and measurement configuration information;performing at least one of a measurement operation and a feedbackoperation on sidelink according to the sidelink configurationinformation.